Some researchers have begun to study mitochondrial DNA in the heart cells of different age There are more mitochondria in cells that need a lot of energy to do work, such as heart muscles.
groups. What do you think researchers discovered in the mitochondrial DNA taken form the heart
cells of older adults?

Types of scientific inquiry that biologist engage in that cannot be completely controlled

The activity of the modern sample is 1.10 bq . how long does that measurement take?

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?